<!DOCTYPE html>
<html>
<head>
    <title>index</title>
</head>
<body>
${message}
<form action="main" method="post">
    <input type="text" name="username" value="YFree">
    <input type="password" name="password" value="YFree">
    <input type="text" name="code" placeholder="请输入验证码">
    <img src="/getCode">
    <input type="submit" value="登录">
</form>
</body>
</html>
